gem install sqlite3 -v '1.3.9' 权限被拒绝是怎么回事？

Question

[frozen@localhost first_app]$ gem install sqlite3 -v '1.3.9'
ERROR: While executing gem ... (Errno::EACCES)
Permission denied - /home/frozen/.rvm/gems/ruby-2.0.0-p481@railstutorial_rails_4_0/gems/sqlite3-1.3.9/.gemtest

Answer 1

sudo chmod 777 /home/frozen/.rvm

Answer 2

sudo chown -R frozen /home/frozen/.rvm